PDF / .TMP malware analysis — malicious · db63614ef7d256ae

MALICIOUS

PDF / .TMP

44.7 KB

MD5: ccd3cb49a6a8d7c4a36df7b1f6505dd4 SHA-1: dd0612999b9c271a01298252bd105c289fe70f52 SHA-256: db63614ef7d256aec6a6fe1644fd44ee4d9c6df95ad4141e64f578a355aa97a3

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains embedded JavaScript and 3D content, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_U3D_CVE_RELATED. The extracted artifacts, particularly 'deobfuscated.js' and 'legacy_pdfkit_stage_000.js', suggest the script is designed to download and execute a second-stage payload. The presence of U3D content also points to a potential exploit targeting Adobe Reader vulnerabilities. The exact nature of the payload and the specific exploit used cannot be determined without further dynamic analysis.

Heuristics 5

U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
syncAnnotScan annotation-staging primitive low PDF_FOXIT_SYNCANNOTSCAN

PDF JavaScript calls syncAnnotScan() — a no-op annotation-enumeration primitive used by exploit-kit JavaScript to stage payload reads from annotation /Subject fields before eval(). Not a vulnerable sink itself; rarely seen in legitimate PDFs. (matched in decompressed stream)
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `754a0eb391d64a065621990a1dfb074ecea2ddd16f9809bb37f51e80b8c2f753`	pdf-javascript-stream	PDF /JS object 9 at offset 0x4427	448 bytes
`legacy_pdfkit_stage_000.js` `22e6538b49a0dab995647ee77836647f322a960ac7e930d9d2a2efbcb32add8f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1C09	12443 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `3e9e04a0cdc3ca0973b18463618ad244f3d9e520b3d5ba6bcf59d1cd3ea06616`	deobfuscated-js	PDF JavaScript deobfuscation pass	312199 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`u3d_00_off00004666.bin` `fb27c6f6ffe2b08a88f79f344ef3cb4f85460ac81a062194b6fd84ab6e48b628`	pdf-3d-stream	PDF U3D 3D stream at offset 0x4666	28021 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.

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